Being unexpectedly fired from a job has a brutal finality, leaving you feeling lost, with little direction and wondering what will come next. Well, as it turns out, sometimes that next thing is your recently-ex boss calling and begging you to cover for your recently-ex coworkers when they go on leave. Why not? You're perfect for the task. Heck, you were doing the job yourself until very recently! From the boss's point of view, it's hard to see how anyone might have an issue with this proposal!…